Japan responded first, by forwarding it to the European department as the request was outside of their area (maybe the Tap-In Console works differently in Japan?)! Got only one response from Germany telling that: “The distance is 0,95 meter, 5 meter and by infinity more than 20 meter.” That’s it! Nothing more! Obviously, this is for the 70-200 lens, but what about the 24-70 mentioned in the same e-mail and the other questions? Only useful information was “more than 20 meters”, which doesn’t appear in the Tamron utility and I find it strange as the furthest distance reported in the image file is 35.48 meters at 70mm focal length and 100.00 meters at 200mm!? From USA I got a couple of answers but in general they were just ramblings with no useful information and in the end, I didn’t even get an answer any more.
#Reikan focal pro lens calibration distance calculator how to#
How to perform the actual calibration procedure is nowhere to be found in the documentation with the lens or the Tap-In Console, so I expected it be done at largest aperture as this is most common.ĭuring this time period I sent an e-mail to Tamron in Japan, Europe (Germany) and USA if they had a step by step guide on how to do it, and also how far away is enough for calibrating at infinity with both of the mentioned G2 lenses (24-70 and 70-200). Why head-scratching? Because you might learn something about your lens that you haven’t thought about if you weren’t deep into lens design.Īccording to the Tap-In Utility, the 24-70 G2 should be calibrated at closest focus distance, medium distance and infinity (medium distance means half travel of the focus ring from closest to infinity), and at 24, 35, 50 and 70mm focal length. This lens was my second Tamron lens to be able to use the Tap-In Console, and I would call it one of the most ingenious gadgets in the photo world, it’s also source of head-scratching. If you wonder about the Tap-In Console, I made a short article about it HERE. I’m not saying that the Tamron is better than the Nikkor, but it freed up some money that I could use on something else without sacrificing much of the performance (if any).
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I’ve owned Tamron SP lenses for more than ten years and have been pretty happy about them, so when Tamron announced their updated version of the already very good 24-70 f/2.8 VC, I actually sold my Nikkor 24-70 f/2.8 VR to get the new Tamron. SP, Super Performance, means they perform on a high level, more or less on the same level as first party lenses, without the same price tag. I’ve always liked Tamron SP lenses as I think they give a lot for the money.